


Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
A Few Clouds
85°F
29°C
Humidity | 40% |
Wind Speed | S 8 G 21 mph |
Barometer | 30.11 in (1019.1 mb) |
Dewpoint | 58°F (14°C) |
Visibility | 10.00 mi |
Heat Index | 84°F (29°C) |
Last update | 4 Oct 1:53 pm CDT |
Extended Forecast for
Waterloo IL
This Afternoon
High: 86 °F
Sunny
Tonight
Low: 57 °F
Clear
Sunday
High: 88 °F
Sunny
Sunday Night
Low: 61 °F
Mostly Clear
Monday
High: 84 °F
Sunny then
Chance
T-stormsMonday Night
Low: 65 °F
Chance
ShowersTuesday
High: 78 °F
Chance
Showers then
Chance
T-stormsTuesday Night
Low: 55 °F
Mostly Cloudy
Wednesday
High: 74 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 86. South wind around 11 mph.
Tonight
Clear, with a low around 57. South wind 5 to 7 mph.
Sunday
Sunny, with a high near 88. South wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 61. South wind 5 to 7 mph.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South wind 3 to 6 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 81.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Waterloo IL
38.33°N 90.16°W (Elev. 600 ft)
38.33°N 90.16°W (Elev. 600 ft)
1:46 pm CDT Oct 4, 2025
2pm CDT Oct 4, 2025-6pm CDT Oct 10, 2025